1861 - David Wesson was born (d. 22 May 1934). American chemist who created Wesson cooking oil. He experimented with purifying cotton seed oil, developed a system in 1900 to make the pure oil palatable, and formed the Southern Oil Company to market it.

1890 - Arthur Holmes was born (d. 20 Sep 1965). English geologist and petrologist was one of the foremost geologists of the twentieth century, who made major contributions to the geochronology of Africa, the genesis of igneous rocks, and physical geology .

1890 - Rolla Neil Harger was born [died 8 Aug 1983]; American toxicologist and biochemist who was at Indiana University when he invented the first successful machine for testing human blood alcohol content, called the Drunkometer (1931).

1902 - Alfred Tarski was born (d. 26 Oct 1983). Polish-born American mathematician and logician who made important studies of general algebra, measure theory, mathematical logic, set theory, and metamathematics.

1921 - Murray Bookchin was born (d. 2006). American anarchist. Prolific author, philosopher, ecologist (under the pseudonym Lewis Herber during the 50s Red Scare & blacklist), historian, advocate of 'Libertarian Municipalism', head of the Institute for Social Ecology in Vermont.